One type of the sensor is installed at the switch on the wall the other is installed in the lamp base.

有两种，一种是安装在墙上的开关另一种是安装在灯座里的。

youdao

One type of the sensor is installed at the switch on the wall the other is installed in the lamp base.

有两种，一种是安装在墙上的开关另一种是安装在灯座里的。

youdao